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STTS424E02 데이터시트(PDF) 14 Page - STMicroelectronics |
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STTS424E02 데이터시트(HTML) 14 Page - STMicroelectronics |
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14 / 51 page ![]() Temperature sensor operation STTS424E02 14/51 3.3 SMBus/I2C AC timing consideration In order for this device to be both SMBus- and I2C-compatible, it complies to a subset of each specification. The requirements which enable this device to co-exist with devices on either an SMBus or an I2C bus include: ● The SMBus minimum clock frequency is required. ● The 300 ns SMBus data hold time (THD:DAT) is required (see Figure 7 and Table 2 on page 15. ● The SMBus time-out is maximum 40 ms (temperature sensor only). Note: Since the voltage levels are specified only within 3.3 V ±10%, there are no compatibility concerns with the SMBus/I2C DC specifications. Figure 7. SMBus/I2C timing diagram A12266 SCL P tSU:STO tSU:STA S SDA VIH VIL VIH VIL tSU:DAT tF tHD:DAT tR tHIGH tLOW tHD:STA tBUF S P |
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